Comparison

Interval Timer vs Voice Pacer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Interval Timer

Organize your running and high-intensity interval training sessions with ease. Quickly set up custom time intervals for running, walking, warm-ups, and cool-downs. Receive voice and vibration notifications for interval changes, and enjoy background music playback.

Highlights
  • Intuitive design
  • Customizable time intervals
  • Warm-up and cool-down timers
  • Voice and vibration notifications
  • Background music support
  • Foreground/background operation
Features
Read full description

Create custom run-walk intervals, HIIT sessions, and cardio workouts in seconds. Train with voice announcements and haptic cues, control workouts from Apple Watch, save sessions to Apple Health, and track your workout history. Set your intervals, hit Start, and focus on your workout—not the clock. CREATE YOUR CUSTOM WORKOUTS • Build warm-up, running, walking, and cool-down intervals • Customize each interval duration and repeat cycle for any training goal • Save multiple custom workouts for quick access • Preview your full workout before you start • Relaunch your favorite sessions in just a few taps STAY IN THE FLOW • Hear clear voice announcements at every interval transition • Feel haptic cues when it’s time to change pace • Keep your workout running while your iPhone is locked or the app is in the background • Listen to music, podcasts, or audiobooks while you train TRAIN WITH APPLE WATCH • Sync your custom workouts to Apple Watch • Start, control, and monitor workouts directly from your wrist • Train phone-free with workouts ready on your Watch • Track heart rate, distance, and active energy during your workout • Save completed workouts to Apple Health TRACK YOUR PROGRESS • Browse completed workouts in calendar and history views • Review total duration, intervals, distance, and active energy • Look back at your training over time • Share your workout results • Export and restore backups of your workout data BUILT FOR EVERY WORKOUT Whether you're starting a beginner run-walk program, adding sprint intervals to your training, preparing for a race, or building a focused HIIT session, Interval Run keeps you on track from the first interval to the last. Create your workout. Start running. Let Interval Run handle the timing. Some features shown, including multiple workouts and full workout history, require Interval Run Pro. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Voice Pacer

This running app offers a voice-guided training coach to help you maintain pace and intensity. It creates personalized training plans based on your performance and includes a running diary to track progress. Stay organized with calendar integration and receive motivational support during your runs.

Highlights
  • Customized voice guidance
  • Personalized training plans
  • Interactive running diary
  • Calendar integration
  • Motivational support
Features
Read full description

Welcome to VoicePacer, your innovative running companion that revolutionizes the way you train. With our advanced voice-guided training coach, you'll never run alone. Whether you're preparing for a marathon or just trying to stay active, VoicePacer is here to guide you every step of the way. Key Features - Customized Voice Guidance: Receive real-time, audio-based instructions tailored to your training schedule, helping you to maintain the right pace and intensity. - Personalized Training Plans: VoicePacer evaluates your performance and creates personalized training programs that adapt to your fitness level and goals. - Interactive Running Diary: Track your progress with our intuitive running log. Record your runs, monitor improvements, and see how close you are to reaching your objectives. - Calendar Integration: Plan your training sessions with ease. Sync with your calendar to stay organized and never miss a run. - Motivational Support: Get encouragement and feedback as you run. Our voice coach keeps you motivated and on track towards your fitness milestones. VoicePacer is more than just a running app; it's a personal coach in your pocket. Get ready to run smarter, improve your performance, and achieve your running goals with VoicePacer. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://voicepacer.com/privacy

Screenshots

Interval Timer4 screens
Voice Pacer4 screens

Verdict

The call

The clearest difference is review sentiment: Voice Pacer at 100% against Interval Timer's 21%. Voice Pacer also leads on rating (5.0 vs 4.5) and update cadence (every 8 days vs every 3 months). Interval Timer's advantage is ads (none vs shown) and ratings volume (534 vs 2). On price, in-app purchases, monetization model and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Interval Timer sells 3 in-app purchases, starting at $2.99 per month and Voice Pacer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Voice Pacer holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Interval Timer has 534 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 21% of Interval Timer's written reviews are positive against 100% of Voice Pacer's.

UpkeepUpdate frequency

Interval Timer ships an update every 3 months, Voice Pacer every 8 days. The most recent releases landed on September 1, 2026 and August 23, 2026 respectively.

Scorecard6 real differences · 4 level
Interval Timer versus Voice Pacer: the parameters behind the verdict, then further details
ParameterInterval TimerVoice Pacer
PriceFreeFree
Rating4.5 (534 ratings)5.0 (2 ratings) — better
Positive reviews21.1% of reviews100.0% of reviews — better
Number of ratings534 — better2
Update frequencyEvery 3 monthsEvery 8 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS26.015.6 — better
Further details — not scored
Size11 MB70 MB
Age rating4+4+
DeveloperRoma SosnovskyKo Hyunshik

Customer experience

Interval Timer

All ratings534 ratings
Positive86.9%
Neutral3.4%
Negative9.7%
Written reviews95 reviews
Positive21.1%
Neutral8.4%
Negative70.5%

Voice Pacer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Interval Timer

Reported bugs

4 issues
  • Timer resets or freezes during workout
  • Prompts not working when phone is locked or in pocket
  • Unexpected interval changes or duration changes
  • Compatibility issues with music playback

Requested features

6 requests
  • Option to pause/resume timer
  • Larger time remaining display
  • Apple Watch app
  • Ability to play audio prompts even with screen off
  • More interval options (run/walk/jog)
Show 1 more
  • Congratulatory audio cue at the end

Voice Pacer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Interval Timer

Subscriptions2
  • Interval Run Pro Monthly$2.991 Month
  • Interval Run Pro Annual7 Days trial$19.991 Year
One-time1
  • Full Version$2.99
1 purchases

Voice Pacer

One-time1
  • Premium Lifetime Access$3.99

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Voice Pacer free?
Voice Pacer is free to download, with in-app purchases available.
Which has better reviews, Interval Timer or Voice Pacer?
Voice Pacer is rated higher. Interval Timer averages 4.5 out of 5 from 534 ratings, while Voice Pacer averages 5.0 from 2 ratings.
Do Interval Timer or Voice Pacer have ads?
Voice Pacer shows ads; Interval Timer does not.
Which is updated more often, Interval Timer or Voice Pacer?
Interval Timer ships an update every 3 months, and Voice Pacer every 8 days. Most recently, Interval Timer was updated on September 1, 2026 and Voice Pacer on August 23, 2026.

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